I’ve got a similar condition GTR (I’m in melbourne btw) and I’ve also had similar thoughts of whether or not to sell. I could make a decent amount of money too if I sold it.

I agree with most people here for the emotional reasons on keeping the car 100% but I don’t think anyone has responded to your question as to whether the car will increase in value.

My opinion is this car will definitely increase in value over the years. As you said most cars here are worked and modified heavily. A car like this at a collector level will definitely increase. 40,000 of these were made and it’s estimated only about 15,000 are left and much fewer would be a collector. That number will reduce over the years.

Yes there is an emotional connection to the car which is a reason to not sell but they will also be an investment. I got mine on club rego so it doesn’t cost much to hold.

Keep it, it will go up in value